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Stopper Bolts With Bumpers Hexagon Socket Head UNAH
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Stopper Bolts With Bumpers Hexagon Socket Head UNAH

Availability:
Quantity:
  • ZUNAH

  • ZHENGCHEN

  • ZUNAH

Large-headed Stoppers. Best for receiving work pieces on large surfaces.

Head color 

UNAH Urethane (Black) Shore A90 4137 Alloy Steel 10.9 Trivalent Chromate 1018 Carbon Steel Trivalent
Chromate
UNAHH Urethane (Blue) Shore A70 10.9 Trivalent Chromate
SLUNA Low Repulsion Urethane (Gray) Shore A70 304 Stainless Steel - - 304 Stainless Steel -

Stopper Bolts - Hex Socket Head

Stopper Bolts - Hex Socket Head, with Urethane Bumper
・Materials
Type Stopper Screw [ A ]Accessories (Hex Nut)
[ M ]Material [ H ]Hardness [ M ]Material *Strength Class [ S ]Surface Treatment [ M ]Material [ S ]Surface Treatment
ZUNAH Urethane (Black) Shore A90 4137 Alloy Steel 10.9 Trivalent Chromate 1018 Carbon Steel Trivalent
Chromate
ZUNAHH Urethane (Blue) Shore A70 10.9 Trivalent Chromate
ZSLUNA Low Repulsion Urethane (Gray) Shore A70 304 Stainless Steel - - 304 Stainless Steel -

Specifications

Part Number - L
ZUNAH4
-
20
Part Number L t D A d B H m
Type M (Coarse) UNAH, SLUNA UNAHH

ZUNAH


ZUNAHH


ZSLUNA
3 10 15






10 15






3 7.5 5.5 3.3 2.5 6 Full Thread 1.8
4 10 15 20 (*25) (*30)



10 15 20 *25 *30



10 7 4.2 3 7 22 2.4
5 10 15 20 25 *30 (*40)



15 20 25 *30 *40


4 12.5 8.5 5.5 4 9 24 3.2
6 10 15 20 25 30 *40 (*50)


15 20 25 30 *40 *50

15 10 6 5 10 26 3.6
8 10 15 20 25 30 *40 *50 (*60)



25 30 *40 *50 *60
5 20 13 7.3 6 13 30 5
10 10 15 20 25 30 40 *50 (*60) (*70)



30 40 *50 *60 *70 25 16 10 8 15 34 6
12
15 20 25 30 40











6 30 18 13 10 18 Full Thread 7
16

20 25 30 40











40 24 17 14 22 Full Thread 10


Frequently asked questions about this product (FAQ)


1. Did it fall off without a few collisions? Is it a quality issue?

The stopper is sintered on the bolt and can absorb the impact force from the front, but when the force point is too inclined towards the side, it is relatively easier to fall off.


2. Will there be any small burrs on the surface after arrival that will affect the use?

It does not affect use. This product is formed by one-time injection molding, and there may be small burrs after molding, but it does not affect use. If there are special requirements for appearance, you can request special production from Mismi customer service.


3. What is the service life of polyurethane gaskets compared to rubber materials?

Generally speaking, polyurethane is more excellent in terms of wear resistance and mechanical strength, with a longer service life. However, polyurethane is more sensitive to changes in the usage environment, especially its hydrolysis characteristics, which can shorten its service life.


4. How can polyurethane and resin heads be used differently? What is low rebound polyurethane?

Polyurethane belongs to the category of elastomers and has better cushioning performance than resin. The material of resin is hard and has much higher mechanical strength compared to polyurethane, which can withstand greater impact forces.

The material of low rebound rubber is very special, which can reduce the thermal energy generated by the workpiece after impact


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Dongguan Zhengchen Hardware Co., Ltd. For over 10 years, Our Products has leveraged advanced technologies and uncompromised quality control to deliver precisely engineered parts across the globe, impacting virtually every aspect of modern life.
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